LHC@home

LHC@home

This a research project that uses Internet-connected computers to advance Particle and Accelerator Physics. Participate by downloading and running a free program on your computer. By default, you can run the classic LHC@home application Sixtrack, for simulations of accelerator physics, and help researchers at CERN to improve the LHC.

Other LHC@home simulations that utilizes virtualization to run applications for Theory and experiment simulations for ATLAS, CMS and LHCb are also available. In order to run these, you need to install VirtualBox and enable the additional applications in your LHC@home project preferences.

User of the day

News

Deadline change for ATLAS jobsDue to the tight deadline of the ATLAS tasks, we change to deadline of ATLAS jobs from 2 weeks to 1 week. The ATLAS job takes about 3-4 CPU hours to finish on a moderate CPU (2.5GFLOPS).16 Aug 2017, 8:42:03 UTC
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New ATLAS app version released for Linux hostsWe released a new version of the ATLAS app today, 2.41 for the x86_64-pc-linux-gnu platform.
The new features of this version include:
1. It requires the host OS to be either Scentific Linux 6 or Cent OS 7.
2. It require CVMFS and Singularity instead of Virtualbox to run the ATLAS jobs.
3. It is more efficient, as the avoidance of using Virtualbox.
Currently, this version is set to beta version.

For people who want to try it out,we provide a script to install everything including CVMFS, singularity here,

CMS Weekend problemWarning: The WMAgent which controls CMS jobs appears to have a failed component very recently. Queue seems to be exhausted. Please set No New Tasks or change to a backup app while I try to raise someone at CERN to fix it. This could be a problem given that this is expected to be the heaviest weekend of the year for holiday travel in Europe...5 Aug 2017, 4:31:20 UTC
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Optimising distribution of SixTrack tasksDear Volunteers,

we are trying to improve the distribution of SixTrack tasks. If your host could process more tasks but during the project update you don't receive any, can you let us know and send us your client logging report? Please continue the thread "SixTrack Tasks NOT being distributed" opened by Eric here:http://lhcathome.cern.ch/sixtrack/forum_thread.php?id=4324
so that we can collect all the issues in only one place. In this way, we could try to better tune parameters controlling the distribution of tasks on the server side.

Aborted Work UnitsAfter deleting many really old results from 2013 until March 2017 (was meant to
be December 2016) it seems many Tasks have been aborted. A full analysis
and report will be posted. No action required by volunteers. Eric.24 Jul 2017, 12:26:54 UTC
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